1 OVERVIEW
1-8
Seiko Epson Corporation
S1C17M12/M13 TECHNICAL MANUAL
(Rev. 1.2)
1.3.3 Pin Descriptions
Symbol meanings
Assigned signal: The signal listed at the top of each pin is assigned in the initial state. The pin function must be
switched via software to assign another signal (see the “I/O Ports” chapter).
I/O:
I
= Input
O
= Output
I/O
= Input/output
P
= Power supply
A
= Analog signal
Hi-Z
= High impedance state
Initial state:
I (Pull-up) = Input with pulled up
I (Pull-down) = Input with pulled down
Hi-Z
= High impedance state
O (H)
= High level output
O (L)
= Low level output
Tolerant fail-safe structure:
✓
= Over voltage tolerant fail-safe type I/O cell included (see the “I/O Ports” chapter)
Table 1.3.3.1 Pin description
Pin/pad
name
Assigned
signal
I/O Initial state
Tolerant
fail-safe
structure
Function
S1C17M12
S1C17M13
V
DD
V
DD
P
–
–
Power supply (+), I/O power supply (except for P50–54)
✓ ✓
V
DD2
V
DD2
P
–
–
I/O power supply (P50–54)
✓ ✓
V
SS
V
SS
P
–
–
GND (except for P40–47, P50–54)
✓ ✓
V
SS2
V
SS2
P
–
–
GND (P40–47, P50–54)
✓ ✓
V
PP
V
PP
P
–
–
Power supply for Flash programming
✓ ✓
V
D1
V
D1
A
–
–
V
D1
regulator output
✓ ✓
#RESET #RESET
I
I (Pull-up)
–
Reset input
✓ ✓
P00
P00
I/O
Hi-Z
–
I/O port
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
✓ ✓
ADIN07
A
12-bit A/D converter Ch.0 analog signal input 7
–
✓
P01
P01
I/O
Hi-Z
–
I/O port
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
✓ ✓
ADIN06
A
12-bit A/D converter Ch.0 analog signal input 6
–
✓
P02
P02
I/O
Hi-Z
–
I/O port
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
✓ ✓
ADIN05
A
12-bit A/D converter Ch.0 analog signal input 5
–
✓
P03
P03
I/O
Hi-Z
–
I/O port
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
✓ ✓
ADIN04
A
12-bit A/D converter Ch.0 analog signal input 4
–
✓
P04
P04
I/O
Hi-Z
–
I/O port
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
✓ ✓
ADIN03
A
12-bit A/D converter Ch.0 analog signal input 3
–
✓
P05
P05
I/O
Hi-Z
–
I/O port
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
✓ ✓
ADIN02
A
12-bit A/D converter Ch.0 analog signal input 2
–
✓
P06
P06
I/O
Hi-Z
–
I/O port
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
✓ ✓
ADIN01
A
12-bit A/D converter Ch.0 analog signal input 1
–
✓
P07
P07
I/O
Hi-Z
–
I/O port
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
✓ ✓
ADIN00
A
12-bit A/D converter Ch.0 analog signal input 0
–
✓
P10
P10
I/O
Hi-Z
–
I/O port
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
✓ ✓
VREFA0
A
12-bit A/D converter Ch.0 reference voltage input
–
✓
P11
P11
I/O
Hi-Z
–
I/O port
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
✓ ✓
EXSVD0
A
External power supply voltage detection input Ch.0
✓ ✓
P12
P12
I/O
Hi-Z
–
I/O port
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
✓ ✓
EXSVD1
A
External power supply voltage detection input Ch.1
✓ ✓